Envelop-machine.



No. 659,960. Patented on. IS, I900. E. ERMOLD.

ENVELDP MACHINE. (Application filed Jan. 18, 1900.) (No Model.) 2 Sheets-Sheet l.

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E. ERMULD.

ENVELDP MACHINE.

(Application filed Jan. 18, 1900.) (No Model.)

Patented Oct. I6, I900.

2 Sheets-Sheet 2.

WITNESSES INVENTOR WW By ,p

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lltri lflD STATES PATENT @THCE,

EDWARD ERMOLD, on NEW YORK, N. Y.

ENVELOP-MACHINE.

SPECIFICATION forming part of Letters Patent No. 659,960, dated October 16. 1900.

Application filed January 18, 1900' Serial No. 1,875. tNo modem J) Z7 whom it nuty concern.-

Be it known that I, EDWARD ERMOLD, a citizen of the United States, residing in the city of New York, borough of Manhattan, State of New York, have invented certain new and useful Improvements in Envelop-Machines, of which the following is a specification.

'1 his invention relates to improvements in envelop-machines, and more especially to improvements in the mechanism by which the gumining-rollers, by which the gum is transferred from the gum-supplying fountain to the faces of the pickers, are actuated.

The invention consists in the combination, with the gum-supply fountain and gummingrollers, of stationary transverse guide-rods at the upper part of the machine, means for guiding said rollers on said rods, a drivingshaft, a pinion 011 said driving-shaft, a gearwheel meshing with said pinion and provided with a cam-groove, a vertically-guided rod provided with a roller engaged by said camgroove and with a lateral arm, a pivot-link connected with said arm, a fulcrumed and spring-actuated elbow-lever connected with said link, the upper arm of said elbow-lever being provided with a toothed segment, a pinion meshing with said segment, and lever connections between the pinion-shaft and the means for guiding the gumming-rollers.

In the accompanying drawings, Figure 1 represents a frontelevation of the framework of an envelopmachine of the usual construction and showing also myimproved mechanism for impartingreciprocating motion to the guinming-rollers, and Fig. 2 is a side elevation of said frame and mechanism.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the frame of an envelop-machine, which frame supports in suitable bearings the drivingshaft S of the machine. An auxiliary frame A is attached to the top part of the main frame A, said auxiliary frame supporting in stationary forwardly and back wardly extending bracket-arms B B transverse guide-rods O for the gunnning-rollers. The shafts d of the gumming-rollers D are supported in suitable bearings d, which are suspended from cross-heads (Z that are guided on the trans verse rods G, the upper ends of the crossheads being connected by pivot-links D with curved arms D which are secured at their lower ends to ashaft D, which turns in bearings of the main frame A, as shown clearly in Fig. 2. A pinion c on the shaft D is placed in mesh with a toothed segment c on the upper arm of a bell-cran k lever (2 the lower arm of which is slotted at the outer end and connected by a pitman 6 with a laterallyex tending arm f of a vertically-guided rollercarrying rod F. The slotted outer end of the lower arm of the fulcrum-levere is provided with an adj usting-screw c, by which the pivot connection of the lower arm of the elbow-lever with the pitman 6 can be accurately adj ustcd so as to regulate thereby the exact length of stroke of the gummingrollers in both directions. A helical spring 6 is connected at one end to the outer end of the lower arm of the elbow-lever e and at the other end with the top part of the main frame A, so as to balance the weight of the elbowlever e and connecting-link c and thereby facilitate the motion of the mechanism.

The roller-carrying rod F is guided in a keeper F, attached to the main frame, and at its lower fork-shaped end on the outer end of a short shaft f to which is applied a gear- Wheel f which is in mesh with the trans mittiug-pinion f on the driving-shaft S. The face of the gear-w heel is provided with a cam-groove g, in which is guided a roller g, supported on the vertically-guided rod F. The cam-groove g is formed of raised ribs, which are preferably cast integral with the transmitting gear-wheelf. The cam-groove is so shaped that by means of the intermediate motion-transmitting lever mechanism it imparts a lateral forward motion to the gumming-rollers on the guide-rods O and a corresponding return motion to the same. The forward motion, as well as the return motion, are controlled positively by the camwheel and are made always in the same period of time, so that no dragging is permitted during the return motion of the gummingrollers by which the proper functioning of the remaining parts of the machine might be impeded. hen the cam-groove is in the position shown in Fig. 1, the gumming-rollers are in their position on the roller of the supply-fountain G, so as to take up a new supply of gu m. By the motion imparted to the camgroove the rod F and mechanism intermediate between the same and the gummiug-rollers are operated, and thereby the gummingrollers moved along the guide-rods in the position shown in Fig. 2 and in dotted lines in Fig. 1, so as to transfer the gum to the faces I of the pickers. They are reversed slowly by reason of the less eccentricity of the camgroove, so as to permit the pickers to act on the blank and lift the same, after which the cam-groove, by increased eccentricity, actuates the vertically-guided rod F and intermediate mechanism, so that the gumming-rollers are returned at the same speed as during the lateral forward motion back to their starting position on the supply-roll of the gumfountain. The return motion thereby is made positive and not dependent on springs, so that no irregularity in the return motion of the gumming-rollers is possible and a more elfective operation of the envelop-machine is obtained. I

Having thus described my invention,

claim as new and desire to secure by Letters Patent In an envelop-machine, the combination, with the gum-supply fountain, and guminingrollers, of stationary transverse guide-rods at the upper part of the machine, means for guiding said rollers on said rods, a drivingshaft, a pinion on said driving-shaft, a gear- 5 wheel meshing with said pinion and provided with a cam-groove, a vertically -guided rod provided with a roller engaged by said camgroove, and with a lateral arm, a pivot-link connected with said arm, a fulcrumed and spring-actuated elbow-lever connected with said link, the upper arm of said elbow-lever being provided with a toothed segment, a pinion meshing with said segment, and lever connections between the shaft of said pinion and the means for guiding the gumming-rollers, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

EDWARD ERMOLD.

Witnesses:

M. H. WURTZEL, GEORGE O. GEIBEL. 

